Ore-grinder.



E- F. McCOOL.

QREFRINDER. I 1,138,966. A I I Patented May 11, 1915 v 4 SHEETS-SHEET 1.

Q R N v q q w Kt lnvehtor Attorneys E. F. McCOOL.

. ORE GRINDER.

APPLICATION FILED JULY 3. :91].

1,1 38,966. Patented May 11, 1915.

4 SHEETS-SHEET 2.

lllllilllHl Attorneys E. F. McCOOL.

ORE GRINDER.

APPLICATION man JULY 3. 191:.

1 1 38,966. Patented May 11, 1915.

4 SHEETS-SHEET 3.

Witnesses lnventor (4|. Attorneys E. F. McCOOL.

ORE GRINDER.

APPLICATION FILED JULY 3. 19H.

1 ,138,966. Patented May 11, 1915.

4 SHEETS-SHEET 4.

UNITED STATES PATENT OFFICE.

EDWARD I. MOCOOL, 0F VICTOR, COLORADO.

ORE-GRINDER.

Application filed July 8, 1911. Serial No. 836,778..

to an improvement capable of a combined rotary and rocking motion'.

A further object of the invention isto provide. means for conveniently removing and replacing the disks and to provide means for adjusting the movable disk 1n order to vary the quality of theground In the drawings, Figure l is a longitudinal section. Fig. 2 isa top plan view. Fig.

3 is a section on the line 3 3 of Fig. 1. and Fig. 4 is a section on the line 44 of Fig. 1. Fig. 5 is a front elevation of the disk 37. Fig. 6 is a front elevation of the clutch member 36. Fig.7 is a front elevation of the stationary disk. Fig. 8 is a perspective view of the disk 37. Fig. 9 is a perspective view of the disk 36; Fig. 10 is a perspective view of the disk 31. Fig. 11 is a horizontal cross section through one of the fastenings' for securing the stationary grinding disk to the frame. Fig. 12 is a perspective. view of a CH used-in said fastener. Fig. .13 is a detai 13-1 3,Fi .1.

In the drawings 10 designates a casing which is arranged to support a sleeve 11, the casing being so formed as to house the end portions of said sleeve. Arranged intermedjate the ends of said housings is a pulley by means ofwhich the sleeve is driven. As before stated the end portions of the sleeve 11 extend within the portions -14 and 15- of the ca being supported by bearings 16 and 17, tile sleevebeing spaced from said bearings b a babbit insert 19 and arranged immediate y below each of the bearings is an oil reservoir 20, an oil distributing ring 21 embracin the sleeve and extending within each sai reservoirthus lubricating the sleeve. The bearing 16 is provided with an aum'liaryoil chamber 20 oil passing from' the chamber 20' throughthe passage 22 and Specification of Letters Iatent.

sectional view taken upon .the line.

Patented May 11,1915.

being fed from said chamber to the loose pulley 13 which is arranged-'within the sleeve 11. The casing 11 is designed to house a set of gears which transmit the rotar movement of the sleeve to .a' shaft which iseccentrically arranged within the same. This transmission consists of a gear 24 mounted on the sleeve 25 which extends within and is secured to the sleeve-11. The gear 21 1s m mesh with the gear 25' mounted on the stub shaft 26 which supports the sec- 24 is mounted is concentricwith the shaft- 23. Accordingly, all of the gears remain in fixed relation with each'other but they have a common up and down motion due to the eccentricity of the shaft and the portion 55 of the sleeve with relation to the sleeve 25.

The portion 15 of the casing is arranged to contain the grinding mechanism which as before stated consists of a stationary and a rotary disk. The portion 15 supports a hinged housing 15' which is formed with a hopper 30 which discharges at a point slightly above the center of the casing. To the hinged portion of the casing 15 is secured the stationary grinding disk 31,;

gaskets 31 being arranged between. said '32 which pass through openings 33 in the casing, which projections 32 terminate in T-shaped extensions, tapered U-shaped members 3-1 embracing the T-shaped end portions and securely clamping the disk. It will be noted by this-construction that the disk may be readily moved and replaced when the same becomes worn. adjacent the end of the shaft 23 and rotating therewith is clutch disk 35 which is formed witha clutchface 36 which receives a pluralit of projections carried by grinding disk 3 The clutch face of the disk 35 is provided with the'tapered recesses 38 which receive the tapered portions 39 of the projections 40 carried by the Arra nged disk 37, a plurality of springs 41 preventing the accidental dis lacement of said projections. In assembling the disks 35 and the grinding disk '37 the projectionscari its projections thus coming from beneath the springs 41. Particular attention is called to this manner of securing the grinding disk 37 as the same may be readily removed and replaced when it becomes worn access being readily had to said disks by swinging the hinged portion of the casing outwardly. The disk 37 is provided centrally with a socket 43' which receives the rounded end of the shaft 11, said shaft at its end portion acting as apivot for said disk thus providing for a rocking as well as a rotary movement. The disk 37 is of a diameter in excess of the disk 35 and is provided with the portion 37' which overha'ngs said disk 35, the difference in the diameters of the two disks however per mitting the aforesaid rocking movement. Embracing the reduced portionof the disk 35 and interposed between said disks and the bearing 18 a dust guard 45 which is mounted on the insert which is interposed between the sleeve and the shaft 11, this (lust guard 45 effectually preventing dust from entering said bearings. \Vhen power is applied to the sleeve 11 it is transmitted to the shaft 23 through the medium of the transmission gear arranged in the portion 14 of the casing, the gearing between said shaft and sleeve being such that the said shaft and sleeve rotate at different speeds, and the fact that the shaft is mounted eccentrically within the sleeve assures a rocking motion of the disk 37 as well as a rotary motion. This peculiar driving mechanism is to prevent the grinding disks from becoming grooved as by such construction the disks will seldom grind in the same position.

In order. to adjust the rotary disks relative to the stationary disks thefeed screw 46 is provided and'arranged-to extend within the casing 14 its end portions contacting with the longitudinally movable block 47 which as the screw 46 is advanced contacts with the end portion of the shaft 23-t0 ad-' vance the same to the desired degree, attention being called to the fact that the projection 47 will take up the wear incident to its contact with the end portion of the shaft 23, said block 47 being readily replaced as the same becomes worn.

The many advantages of a machine of this kind will be clearly apparent as it will be noted that the grinding disks may be readily removed and replaced; the action of the movable disk being such that said plates will not become grooved. Attention is alsocally mounted within said sleeve, means for rotating said sleeve and shaft at different speeds, a grinding disk pivotally supported by said shaft, means carried by said'shaft dust guard mounted on said bearingan ore grinder, a shaft, a grinding disk in rocking engagement with one end of said shaft, a clutch disk supported upon said shaft adjacent said grinding disk, the rear of said grinding disk having arms extending laterally from a point opposite its center, said clutch disk having a portion of its forward face hollowed out, projections extending inwardly from the rim into the hollowed out portion, and one or more bars of spring material secured at the ends of said run and passing over a part of said hollowed out portion, said arms of the grinding disk being adapted to bear against the projections and under the spring members of the clutch disk.

5. In an ore grinder, a sleeve, a shaft supported eccentrically within said sleeve, means for driving said shaft, a feed screw,

a lug arranged between said feed screw and the end portion of said shaft. the screw when advanced imparting longitudinal movement to said shaft independent of said sleeve.

In testimony that I claim the foregoing as my own. I have hereto affixed my signature in the presence of two witnesses.

EDWARD F. MCCOOL.

Witnesses:

LEEK' A. MALM, LEE Bnnwsrsn.

2. In an ore grinder, a casing, a sleeve supported by the casing, a shaft eccentr1- 

